18 posts • joined Friday 6th August 2010 12:20 GMT
Is that like when the foam on the top of your beer runs down the side of the glass?
Re: Even a Portable Faraday Cage?
I suppose you would have to check the definition of 'apparatus'. If the definition is akin to 'an active device or process' then a Faraday cage gets a pass.
Anyhoo, if blocking radio signals by virtue of building a large building with metal in the walls caused strict liability under the Wireless Telegraphy Act, then every shopping mall developer would be culpable. Shopping malls usually have mobile phone booster systems installed to compensate for their Faraday-cage-like construction.
Re: Pot, kettle, etc...
Yes, but if I had used the word use I wouldn't have been able to make the no-pun intended pun.
Re: Am I missing something?
The switch in question is not switching a load current, it is a wireless/remote switch. The mechanical action of the switch can be leveraged (no pun intended) to provide the energy to power up a transmitter which then reads and transmits the status of the switch to a controller which then switches the load current accordingly.
Took me a while to figure the gobbledegook out.
"Green Power is an extension to the Zigbee protocol that allows switches and sensors to operate from tiny amounts of power - such as the power generated by the physical act of flicking the switch, or from tiny solar cells out of direct sunshine. It offers the promise of a wireless future which doesn't shudder to a halt when the battery runs out."
= "Green power allows switches to operate from the power generated by the physical act of flicking the switch".
This should probably read "Green power allows the status of a switch to be transmitted wirelessly using power generated by the physical act of actuating the (physical, mechanical) switch".
That's 100A per phase...
or the equivalent of a 300A single phase supply. A 200A three-phase supply (equivalent to a 600A single phase supply or 140kW) would be suitable for a medium sized light industrial unit (say 30,000 - 100,000 sq feet).
Also, your 100A residential service is probably only 80A or 60A. 100A is the rating of the fuse carrier. Most residences do not have a 100A fuse fitted. Many newer small houses in the UK with gas central heating, hot water and cooking have only a 40A supply (9.2kW).
Re: reason for Patch Tuesday
Security (software or physical) buys you time and (by a law of diminishing returns) approaches 100% asymptotically. No system is 100% secure.
Having a "secret password" to get access to some system or service is (by definition) security through obscurity.
Not telling anybody that you nicked a Mars bar from the corner shop when you were twelve is security through obscurity.
IMHO, you're not doing yourself any favours by asserting a sweeping generalisation that security by obscurity does not work.
Re: reason for Patch Tuesday
@TiddlyPom "Security by obscurity does NOT work."
Of course it works - witness that Roman coin hoards are still being discovered nearly two thousand years after they were hidden. How does secure for 2000+ years count as "not working"?
There are circumstances where security through obscurity is the statistically/probabilistically best option - and other circumstances where security through obscurity is clearly foolish/ill advised/shortsighted/reckless.
...and the M25
is purportedly the Dread Sigil Odegra...
The title is required, and must contain letters and/or digits.
"What is so special about Guernsey flower growers?"
They're in Guernsey, which is not in the UK, therefore VAT would have to be paid on import to the UK rather than being invoiced by the growers. It allows Guernsey flower growers to send their perishable produce to the UK on a daily basis in small consignments without customs clearance, which would otherwise make the transaction fail if there was any kind of bureauocratic delay.
Arithmetic doesn't add up...
We start with: "some two-million allowances worth about €30m"
We then get: "While each ton of credit is worth about €2m apiece"
Finally, "the theft of 250,000 carbon permits worth over €3m."
If we assume that 1 "allowance" = 1 certificate = 1 credit = 1 ton = 1 tonne = 1 "permit" of CO2,
then apparently the price of a credit starts at 15 euro, rises to 2 million euro and then falls to 12 euro. Phew, that must be difficult to keep track of...
Unfortunately, it's not a well thought through plan...
I can't tell whether or not you're being ironic; but, in case you're not...
We are in a war in Afghanistan because the inhabitants thereof are arguably "culturally, sociologically and technologically" left behind. So what do they do? They grow opium poppies so that they can get money by selling heroin to the first world. They get politically overtaken by the Taliban who apparently want to terrorise the first world over cultural and sociological differences.
We were in in a war in Iraq, not because they are "culturally, sociologically and technologically" left behind, but because they have oil and they are slap bang in the middle of an area where other countries have lots of oil. And we want stability in sandland.
We are likely, at some point, to go to war with Iran and/or North Korea over the fact that they have nuclear weapons programmes. Both countries are "culturally, sociologically and technologically" different. Is different good enough or do they absolutely have to be backward in your world?
Zimbabwe is "culturally, sociologically and technologically" left behind, and desperately needs international intervention. But Zimbabwe doesn't have international terrorists and it doesn't have oil and it doesn't have mineral reserves we are particularly interested in, so we leave it to become a rotten, corrupt, failed state; a place where the UDHR means nothing.
How about Somalia and piracy on the high seas? Not so easy to build a wall 200 miles offshore...
You can build a Great Internet Firewall of China if you like, but it's no going to stop China's ICBM's from blowing your arse to hell.
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